[Problem] BIOS Mod of Dual-CPU Intel X79 Chipset MBs

BIOS/UEFI Modding BIOS Modding Guides and Problems
21

Which edition/version of Windows?

22

I,ve tried windows 8.1, 10, 11 latest versiions but problem not solved

23

I just created account to ask you did toy managed to correct that i have exactly same issue.
I can add Linux (HiveOS) also see it as 4 cores.

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I’ve got the 5 slot (x8 electrical) x79 board and I’m looking for the BIOS that lets more than 2 cores activate.

I was sure I downloaded it from a blog, but I can’t find it again.

Need help to find that BIOS file, and or hone my Google-fu so I can find that blog.

Thanks (mods please move me appropriately as necessary if I am in the wrong place).

Text

718HHkCzeOL.AC_SL1500
718HHkCzeOL.AC_SL15001484×896 165 KB

Edit: GitHub - hongyihui/btcx79-modified-bios: modified uefi bios to enable all cores on chinese x79btc, btc79x5, x79eth03 motherboards. Also enables hyperthreading and intel turbo boost

hongyihui/btcx79-modified-bios

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The best I can find is a missing GitHub links to pescew/x79btc-modified-bios

Which is not backed up on archive.org. If someone has even the filename I can search to see if I did download it. Probably around March 2023

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I think it’s a complete fork. Here’s a saved page of Pescew’ repository.
Pescew from x79btc-modified-bios repository readme.zip (1.9 MB)

1 Like
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Many thanks, I see now that it was ‘forked’ a few times. I was searching for zip, rar and bin files. It was a rom file :joy:.

Now to pay it forward I need to join all the forums I found with users asking how to get their CPU running more than 2 cores :laughing:.

As a general purpose computer this isn’t terrible if you can find for $40-50. I found a 32GB stick of 1899mt/s LRDIMM for $6 to make up for the single memory channel. Only Sandy Bridge support as far as I can tell, now to try my E5 2670.

AliExpress has Walram MSATA 1TB on sale for $20.50.

I was planning to make a 9-16 output PC for a video wall, but I scored a Lenovo P520c motherboard for $45. Better choice, dual x16 slots and a x8. Skylake based LGA2066. W-2135 CPU was $25. Cascade Lake compatible BIOS, wow!

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I only found the “low-power” 6 core to actually function. 2630v2. Makes sense with so few power stages.

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Thank you for this information. I managed to flash this BIOS and now I can see all four cores of the E5-2609 v2. I thought of buying an E5-4650 or something similar, but I guess I must go for a 2630v2 as the fastest working option.
Do you know if this board can be installed in a standard ATX case? I don’t want to throw this thing away, so I decided to use it as a NAS. I already have a PCI-E to 10x SATA adapter, but it would be great if I could put it in a case.

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The web page selling these does say E5 4xxx series supported, I didn’t look into it, maybe there is a similar 4xxx series that is comparable.

I haven’t tried a case. I use 6mm M3 or 1/4" 6-32 standoffs to prevent shorts. You may need to drill holes for the new pattern. Some cases should have the room. Its only an extra 20mm long.

31

i need bios btc79x9 dual-cpu, Who has this bios please give it to me, cpu runs on 2 cores so can’t do anything. while my work needs more cores

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@cpn
Welcome to the Win-Raid Forum!
Since there were already some BIOS modding requests for Dual-CPU mainboards with an Intel X79 chipset, I have merged them and put your request into it.
Good luck!

33

Have you fixed the bios btc79x9 yet? I am also looking for this bios to open the core for the cpu.